What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Audi A3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294G

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6395400044

Mercedes Vito W639 Anti Theft Alarm Switch Loom Cable A6395400044

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0971405

Audi A3 8V Q2 GA VW Golf CD AdBlue Tank Wiring Harness Cable 1.6 TDI 5Q0971405

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5F4971687D

Seat Leon MK3 Rear Door Wiring Harness Loom Cable 5F4971687D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AV6T-14324-BAF

Ford Kuga Mk1 C394 Starter Cable Wire Lead 2.0 TDCi Diesel AV6T-14324-BAF

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7801203

BMW X5 E70 E87 F10 F11 F15 F25 F30 Diesel Engine Starter Motor 7801203

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2990415

BMW X1 E84 Front Door Handle Bowden Pull Cable Wiring 2990415

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KT1T-19K351-BC

Ford Transit Connect Mk2 Aerial Antenna Module Left N/S KT1T-19K351-BC

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9326026

BMW F30 F31 F32 PDC Wiring Front Bumper Cable Loom Harness 9326026

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8380407-1

BMW X5 E53 Power Distribution Fusebox Cover Fuse Box 8380407

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8R0945094-2

Audi Q5 8R Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 8R0945094

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0971727B

Audi A8 4H D4 Quattro Fuel Tank Pump Wiring Loom Harness 4H0971727B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6958446

BMW E65 E66 E67 Control Unit Door Front Passenger Side Module ECU 6958446

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6M21-14B684-BA

Ford Mondeo Mk4 Galaxy Mk2 Front Seat Wiring Loom Cable 6M21-14B684-BA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FT1T-15K857-AE

Ford Transit Connect Mk2 Centre Console Wiring Loom Harness Cable FT1T-15K857-AE

€23.95

Free delivery: Sep 15 – 16

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Part no. 8E0937548

Audi RS4 B7 8E 8H Battery Main Fuse Box Power Housing Cover Bracket 8E0937548

€23.95

Free delivery: Sep 15 – 16

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Part no. 03L906018LA

Audi A6 C7 2.0 TDI CGLC 177HP Engine Control Unit ECU 03L906018LA Manual

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 99164631302

Porsche 981 Steering Column Microphone Right O/S 99164631302

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0971687A

Audi A6 C6 Door Window Motor Wiring Cable Loom Front Right O/S 4F0971687A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AM5T-18K891-AC

Ford C-Max Mk2 Radio Aerial Antenna Wiring Cable Harness AM5T-18K891-AC

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BV6T-14014-BHC

Ford Focus Mk3 Body Control Module Unit BCM BV6T-14014-BHC

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2N0941329C

VW Volkswagen Crafter Mk2 SY Reduction Agent Metering System Unit 2N0941329C

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EJ32-1430-CC

Range Rover Evoque L538 Negative Battery Cable Wiring EJ32-14301-CC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AH22-14A699-GB

Land Rover Discovery 4 Passenger Seat Wire Wiring Cable L319 AH22-14A699-GB

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7799146

Mini R55 R56 Alternator Supporting Bracket Mount Generator Diesel W16 7799146

€23.95

Free delivery: Sep 15 – 16

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Part no. 9664909780

Peugeot 308 T7 Air Bag Control Module ECU Crash Data Control Unit 9664909780

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6549009600-3

Mercedes GLC 220d X253 654.920 194HP 4Matic Engine Control Unit A6549009600

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8573260-14

BMW F20 F21 114d Diesel N47N 95HP Engine Control ECU Kit DDE 8573260 Manual

€180.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q4959592R

Skoda Octavia IV Door Module Control Unit Front Passenger's Side 5Q4959592R

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06D911023A

Audi A4 B8 2.0 TFSi Petrol Engine Starter Motor Actuator Unit 06D911023A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3Q0959435N

Audi Q3 F3 VW Golf Mk7 Entry Keyless Kessy Control Module Unit ECU 3Q0959435N

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1Q0971121B

Volkswagen Eos 1F Door Wiring Loom Harness Cable Passenger Side 1Q0971121B

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0907159L

Audi A4 B9 A5 F5 Impact Sound Control Unit Module 8W0907159L

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6932644

BMW 3 5 Series E60 E71 E90 E92 Suppression Filter Aerial Module Antenna 6932644

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2135409616

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7798034

BMW E60 E65 E87 E90 Starter Motor Engine 7798034

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9259831

BMW E93 Convertible Wiring Loom Front Door Cables Cable Passenger Side 9186668

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8P0035195M

Audi A3 8P CD Radio Stereo Head Unit Symphony 8P0035195M

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7H0971692AH

VW Transporter T5 Rear Sliding Side Door Wiring Loom Harness Cable 7H0971692AH

€23.95

Free delivery: Sep 15 – 16

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Part no. 8P0051435FQ

Audi A5 8T Interior Phone Holder Tray Connection Station Unit 8P0051435FQ

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0959792H

Audi A8 D4 4H Front Door Control Module Unit ECU Passenger Side 4H0959792H

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2K0972175A

Volkswagen Caddy Mk3 Rear Wiper Motor Wiring Harness Cable 2K0972175A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8489325

BMW i3 I01 94Ah Rex Hybrid Basic Control Unit Module ECU 8489325

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 99164630702

Porsche 981 Steering Column Microphone Left N/S 99164630702

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9253637

BMW 3 5 Series F10 F11 F30 F31 Air Control Unit Module 9253637 65779253637

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4M0907401AM

Audi Q7 4M 3.0TDI DPXB Quattro 218HP Engine Control ECU 4M0907401AM Automatic

€759.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8645329

BMW F20 F21 F30 F31 LCI Alternator Generator 14V 180A 8645329

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5NA971175

Volkswagen Tiguan MK2 Rear Tailgate Wiring Loom Harness Cable 5NA971175

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7601354

BMW X3 F25 Dummy Grommet Electrical Wiring Cable Harness Fastener 7601354

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0963649

Volkswagen T-Roc Steering Wheel Slip Squib Ring 5Q0963649

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9372556

BMW G11 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 9372556

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4E0971142A

Audi A8 S8 D3 Door Window Lifter Wiring Cable Rear Left Right N/O/S 4E0971142A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7C0971819C

VW Volkswagen Crafter SY Reducing Tank Harness Adapter Wiring 7C0971819C

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8615581

BMW 3 F30 LCI 330e B48X Control Unit Bracket Holder Mount 8615581

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-13A444-BBC

Land Rover Discovery Sport L550 Rear Seat Folding Wiring Cable FK72-13A444-BBC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8971030CS

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971030CS

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218707293

Mercedes W221 Seat Control Module Unit Ecu Rear A2218707293

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9894330

BMW G20 G22 G23 G26 G42 G87 Negative Battery Earth Cable Wiring 9894330

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EH22-01445-AB

Land Rover Discovery 4 L319 Battery Pad Cover Panel EH22-01445-AB

€32.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. 7H6970187FT

Volkswagen Transporter T5 Fuse Box Control Module Unit 7H6970187FT

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9218331

BMW E93 Radio Head Unit Comand CD DVD Player Changer 9218331

€617.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0971227A

Audi A4 S4 8W A5 S5 F5 Battery Wiring Harness Cable Loom Distributor 8W0971227A

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6951637

BMW 1 3 SERIES E84 E90 E91 E92 SUCTION PIPE HOSE AIR CON EVAPORATOR COMPRESSOR

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6950364

BMW E65 E66 Front Right Door O/S Wiring Harness Carrier 6950364

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7810002-1

BMW 1 Series E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key 7810002 Manual

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KK2T-18812-YB

Ford Transit MK8 Wire Loom Harness Lead Cable KK2T-18812-YB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8727987

BMW F44 Gran Coupe Door Wiring Harness Rear Door Left Right N/O/S 8727987

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9311039-1

BMW F10 F20 F22 F30 F32 Navigation Module Sat Nav DAB Head Unit High 9311039

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6G9T-14297-BG

Ford Mondeo Mk4 Galaxy S-Max Windscreen Washer Nozzle Wiring 6G9T-14297-BG

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9243213

BMW X3 F25 Central Gateway Control Unit Module ECU 9243213

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3M5T-14B342-AB

Ford Mondeo Mk4 Side Air Module Crash Satellite Sensor 3M5T-14B342-AB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FT1T-15K868-AE

Ford Transit Connect Mk2 Rear Bumper Parking Sensor PDC Wiring FT1T-15K868-AE

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1725404105

Mercedes R172 Rain Sensor Wiring Harness Cable Loom A1725404105

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469008113

Mercedes GLE X156 4Matic Transfer Control Unit Module ECU A2469008113

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9270355

Fuse Carrier BMW F40 Mini F55 F56 F57 F60 Distribution Box 9270355

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2118701585-1

Rain Sensor Mercedes W211 W219 Windscreen Control Unit Module A2118701585

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 95GG-14489-ZTA

Ford Mondeo Mk4 Wiring Harness Cable Connector 95GG-14489-ZTA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7164445-2

BMW X5 E53 Headlight Headlamp Lamp Front Left N/S Plug Wiring Cable 7164445

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0951253

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit 4H0951253

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0907280E

Audi Q7 4L On Board Power Supply Control Module Unit ECU 4F0907280E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7625474

MINI Cooper F55 F56 F57 F60 Battery Mounting Bracket Part Holder 7625474

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669001709

Mercedes ML W166 SRS System Air Module Control Unit ECU A1669001709

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8631672

BMW 1 3 Series F20 F30 LCI M140i 340i Engine Gearbox Module Wiring Loom Harness

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0054635A

Audi A3 8V PDC Parking Sensor Control Unit Module Vodafone Automotive 8W0054635A

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8573574-1

BMW F06 F12 F13 640d N57 313HP Engine ECU DDE Kit CAS4 + Key 8573574 Automatic

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 83A971104S

Audi Q3 F3 Rear PDC Parking Sensors Wiring Loom Harness 83A971104S

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4K5971687BG

Audi A6 C8 Door Wiring Wire Cable Harness Loom Rear Left Right N/O/S 4K5971687BG

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BJ32-14630-AHD

Range Rover Evoque L538 Front Door Wiring Harness Loom Left N/S BJ32-14630-AHD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218207389

Mercedes W221 Seat Headrest Display Monitor Rear Entertainment Unit A2218207389

€218.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7329789-1

BMW 2 F46 Gran Tourer Lamp Tillight Plug Socket Wiring Cable Left N/S 7329789

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 80A907777N

Audi Q5 FY Active Suspension Module Damping Chassis Control Unit EFP 80A907777N

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. N47N-TIGERTUNING

Tiger Tuning N47N Diesel Chip Tuning Power Box Module Performance Remap

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V0863051

Audi A3 8V AMP Amplifier Under Seat Cover Trim Panel Unit 8V0863051

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0971030AE

Audi S5 8T Door Wiring Wire Loom Cable Harness Front Passenger Side 8T0971030AE

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BJ32-3C097-AA

Range Rover Evoque L538 Front Height Level Sensor Right O/S BJ32-3C097-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7798006

BMW E60 E61 E87 LCI E81 E82 X1 E84 E90 E91 N47 Diesel Starter Motor 7798006

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1775406401

Mercedes W177 Door Wiring Loom Harness Cable Front Right O/S A1775406401

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7843526

BMW E90 E92 E93 M3 S65 Engine Starter Motor 7843526

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2515401830

Mercedes W251 Starter Motor Alternator Wiring Harness Cable Loom A2515401830

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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